Common use of Hydraulic Engineering Clause in Contracts

Hydraulic Engineering. Computer programs used for hydraulic modeling, such as HEC-RAS, or WSPG shall be compatible with County and/or District 's computer equipment, and A-E shall receive DIRECTOR approval of any program before it is used. A-E as required, will perform preliminary and/or design level hydraulic analyses of flood control facilities and local drainage systems using, but not limited to, HEC-RAS, WSPG, FLO-2D, RiverFLO- requested may include, but shall not be limited to, existing deficiency and capacity studies, development of design water surface elevations, development of preliminary and ultimate facility design alternatives, sedimentation engineering, construction phasing schedules, and preparation of PS&E. Hydraulic controls for tributary channels and County and/or District committed water surface elevations (if not requested as part of A- be provided where available. Available reports and preliminary engineering studies performed by County and/or District will be provided to A-E. Geotechnical, survey, environmental, utility, and record drawing information (if not part of A- County and/or District. The work to be performed by A-E may include, but is not limited to the following: 1. Hydraulic analysis and generation of hydraulic grade lines (HGL) for existing and future condition design alternatives. Preparation of exhibits indicating the HGL on plans, and profile sheets for existing and future condition alternatives to be presented in report(s). 2. Hydraulic analyses for conveyance of design discharges through existing bridge and culvert structures, including street, freeway and railroad crossings. 3. Sedimentation analyses for natural streams or earthen channels, including, but not limited to, the determination of sediment delivery/load, bed and bank scour (general and local), erosion and deposition (degradation/aggradation), channel/stream stability, horizontal migration and bed and bank erosion protection requirements. Sedimentation analyses may require utilizing software such as FLUVIAL-12, HEC-6 or other software widely accepted and recommended by the professional engineering community. Sedimentation analyses may also include historical research and development and calibration of a historical model in order to determine future stream behavior. 4. Identification of local drainage facilities and catch basins, including a listing of major inlets and committed water surface elevations. 5. Determination of capacities of local drainage facilities. 6. Identification of alternatives, including channel alignment adjustments and right-of-way requirements. 7. Preparation of material quantity and cost estimates for each alternative that is studied with unit prices identified. Comparisons between the costs of alternatives should be included where appropriate. 8. A general discussion of soil conditions and any unique findings. Of particular interest are: ground water, perched water tables and the foundation conditions for the facilities. 9. Identification of unique maintenance problems associated with the alternatives and determination of appropriate maintenance costs based on the project report or A- 10. Recommendation of a preferred alternative for ultimate improvements, and identification of a possible and logical sequence of implementation (aka: construction phasing). 11. Identification, analysis, recommendation, and/or design of existing and/or proposed retarding, retention, water quality, and/or sediment basin alternatives. 12. A determination of existing condition and ultimate condition floodplains in a manner meeting the approval of County and/or District and the Federal Emergency Management Agency (FEMA). 13. Design, analysis, and/or preparation of low impact development (LID) site alternatives. 14. Design of integral recreational features such as bikeways and trails within District right-of-way.

Hydraulic Engineering. Computer programs used for hydraulic modeling, such as HEC-RAS, or WSPG shall be compatible with County and/or District 's computer equipment, and A-E shall receive DIRECTOR approval of any program before it is used. A-/E as required, will perform preliminary and/or design level hydraulic analyses of flood control facilities and local drainage systems using, but not limited to, HEC-RASRAS (HEC-2), WSPG, FLO-2DStorm Program, RiverFLO- Microsoft Excel, and manual “hand” calculations. The analysis requested may include, but shall not be limited to, existing deficiency and capacity studies, development of design water surface elevations, development of preliminary and ultimate facility design alternatives, sedimentation engineering, construction phasing schedules, and preparation of PS&E. Hydraulic controls for tributary channels and County and/or District DISTRICT committed water surface elevations (if not requested as part of A- A/E’s duties) will be provided where available. Available reports and preliminary engineering studies performed by County and/or District DISTRICT will be provided to A-/E. Geotechnical, survey, environmental, utility, and record drawing information (if not part of A- County and/or DistrictA/E’s requested services and if available) may be provided by DISTRICT. The work to be performed by A-/E may include, but is not limited to the following: 1. a) Hydraulic analysis and generation of hydraulic grade lines gradelines (HGL) for existing and future condition design alternatives. Preparation of exhibits indicating the HGL on plans, and profile sheets for existing and future condition alternatives to be presented in report(s). 2. b) Hydraulic analyses for conveyance of design discharges through existing bridge and culvert structures, including including: street, freeway and railroad crossings. 3. c) Sedimentation analyses for natural streams or earthen channels, including, but not limited to, the determination of sediment delivery/load, bed and bank scour (general and local), erosion and deposition (degradation/aggradation), channel/stream stability, horizontal migration and bed and bank erosion protection requirements. Sedimentation analyses may require utilizing software such as FLUVIAL-12, HEC-6 or other software widely accepted and recommended by the professional engineering community. Sedimentation analyses may also include historical research and development and calibration of a historical model in order to determine future stream behavior. 4. d) Identification of local drainage facilities and catch basins, including a listing of major inlets and committed water surface elevations. 5. e) Determination of capacities of local drainage facilities. 6. f) Identification of alternatives, including channel alignment adjustments and right-of-way requirements. 7g) Planning and design of trails adjacent to flood control facilities, including, but not limited to, horizontal and vertical trail alignment, trail ingress and egress points and other trail design features. A/E shall follow the Orange County Highway Design Manual, CalTrans’ Highway Design Manual or other guidelines acceptable to the DISTRICT. h) Preparation of material quantity and cost estimates for each alternative that is studied with unit prices identified. Comparisons between the costs of alternatives should be included where appropriate. 8i) Identification of major utilities, both existing and proposed (if available, may be furnished by DISTRICT), and utility conflicts of those facilities specifically requiring relocation (with the party responsible for relocation also being identified). Utility relocation costs attributable to DISTRICT shall be included in cost estimate summaries. i) A general discussion of soil conditions and any unique findings. Of particular interest are: ground water, perched water tables and the foundation conditions for the facilities. 9. j) Identification of known environmental considerations related to each channel design alternative. k) Identification of right-of-way issues related to each channel design alternative. l) Identification of any existing agreement obligations or need for new agreements required, permits needed for approval from other agencies or cities. m) Identification of unique maintenance problems associated with the alternatives and determination of appropriate maintenance costs based on the project report or A- 10A/E’s independent findings. n) Recommendation of a preferred alternative for ultimate improvements, and identification of a possible and logical sequence of implementation (aka: construction phasing). 11. Identification, analysis, recommendation, and/or design of existing and/or proposed retarding, retention, water quality, and/or sediment basin alternatives. 12. A determination of existing condition and ultimate condition floodplains in a manner meeting the approval of County and/or District and the Federal Emergency Management Agency (FEMA). 13. Design, analysis, and/or preparation of low impact development (LID) site alternatives. 14. Design of integral recreational features such as bikeways and trails within District right-of-way.

Hydraulic Engineering. Computer programs used for hydraulic modeling, such as HEC-RAS, or WSPG shall be compatible with County and/or District 's computer equipment, and A-E shall receive DIRECTOR approval of any program before it is used. A-E as required, will perform preliminary and/or design level hydraulic analyses of flood control facilities and local drainage systems using, but not limited to, HEC-RAS, WSPG, FLO-2D, RiverFLO- requested may include, but shall not be limited to, existing deficiency and capacity studies, development of design water surface elevations, development of preliminary and ultimate facility design alternatives, sedimentation engineering, construction phasing schedules, and preparation of PS&E. Hydraulic controls for tributary channels and County and/or District committed water surface elevations (if not requested as part of A- be provided where available. Available reports and preliminary engineering studies performed by County and/or District will be provided to A-E. Geotechnical, survey, environmental, utility, and record drawing information (if not part of A- County and/or District. The work to be performed by A-E may include, but is not limited to the following: 1. Hydraulic analysis and generation of hydraulic grade lines (HGL) for existing and future condition design alternatives. Preparation of exhibits indicating the HGL on plans, and profile sheets for existing and future condition alternatives to be presented in report(s). 2. Hydraulic analyses for conveyance of design discharges through existing bridge and culvert structures, including street, freeway and railroad crossings. 3. Sedimentation analyses for natural streams or earthen channels, including, but not limited to, the determination of sediment delivery/load, bed and bank scour (general and local), erosion and deposition (degradation/aggradation), channel/stream stability, horizontal migration and bed and bank erosion protection requirements. Sedimentation analyses may require utilizing software such as FLUVIAL-12, HEC-6 or other software widely accepted and recommended by the professional engineering community. Sedimentation analyses may also include historical research and development and calibration of a historical model in order to determine future stream behavior. 4. Identification of local drainage facilities and catch basins, including a listing of major inlets and committed water surface elevations. 5. Determination of capacities of local drainage facilities. 6. Identification of alternatives, including channel alignment adjustments and right-of-way requirements. 7. Preparation of material quantity and cost estimates for each alternative that is studied with unit prices identified. Comparisons between the costs of alternatives should be included where appropriate. 8. A general discussion of soil conditions and any unique findings. Of particular interest are: ground water, perched water tables and the foundation conditions for the facilities. 9. Identification of unique maintenance problems associated with the alternatives and determination of appropriate maintenance costs based on the project report or A-A- independent findings. 10. Recommendation of a preferred alternative for ultimate improvements, and identification of a possible and logical sequence of implementation (aka: construction phasing). 11. Identification, analysis, recommendation, and/or design of existing and/or proposed retarding, retention, water quality, and/or sediment basin alternatives. 12. A determination of existing condition and ultimate condition floodplains in a manner meeting the approval of County and/or District and the Federal Emergency Management Agency (FEMA). 13. Design, analysis, and/or preparation of low impact development (LID) site alternatives. 14. Design of integral recreational features such as bikeways and trails within District right-of-way.

Hydraulic Engineering. Computer programs used for hydraulic modeling, such as HEC-RAS, or WSPG shall be compatible with County and/or District 's computer equipment, and A-E shall receive DIRECTOR approval of any program before it is used. A-E as required, will perform preliminary and/or design level hydraulic analyses of flood control facilities and local drainage systems using, but not limited to, HEC-RAS, WSPG, FLO-2D, RiverFLO- is requested may include, but shall not be limited to, existing deficiency and capacity studies, development of design water surface elevations, development of preliminary and ultimate facility design alternatives, sedimentation engineering, construction phasing schedules, and preparation of PS&E. Hydraulic controls for tributary channels and County and/or District committed water surface elevations (if not requested as part of A- be provided where available. Available reports and preliminary engineering studies performed by County and/or District will be provided to A-E. Geotechnical, survey, environmental, utility, and record drawing information (if not part of A- County and/or District. The work to be performed by A-E may include, but is not limited to the following: 1. Hydraulic analysis and generation of hydraulic grade lines (HGL) for existing and future condition design alternatives. Preparation of exhibits indicating the HGL on plans, and profile sheets for existing and future condition alternatives to be presented in report(s). 2. Hydraulic analyses for conveyance of design discharges through existing bridge and culvert structures, including street, freeway and railroad crossings. 3. Sedimentation analyses for natural streams or earthen channels, including, but not limited to, the determination of sediment delivery/load, bed and bank scour (general and local), erosion and deposition (degradation/aggradation), channel/stream stability, horizontal migration and bed and bank erosion protection requirements. Sedimentation analyses may require utilizing software such as FLUVIAL-12, HEC-6 or other software widely accepted and recommended by the professional engineering community. Sedimentation analyses may also include historical research and development and calibration of a historical model in order to determine future stream behavior. 4. Identification of local drainage facilities and catch basins, including a listing of major inlets and committed water surface elevations. 5. Determination of capacities of local drainage facilities. 6. Identification of alternatives, including channel alignment adjustments and right-of-way requirements. 7. Preparation of material quantity and cost estimates for each alternative that is studied with unit prices identified. Comparisons between the costs of alternatives should be included where appropriate. 8. A general discussion of soil conditions and any unique findings. Of particular interest are: ground water, perched water tables and the foundation conditions for the facilities. 9. Identification of unique maintenance problems associated with the alternatives and determination of appropriate maintenance costs based on the project report or A-A- independent findings. 10. Recommendation of a preferred alternative for ultimate improvements, and identification of a possible and logical sequence of implementation (aka: construction phasing). 11. Identification, analysis, recommendation, and/or design of existing and/or proposed retarding, retention, water quality, and/or sediment basin alternatives. 12. A determination of existing condition and ultimate condition floodplains in a manner meeting the approval of County and/or District and the Federal Emergency Management Agency (FEMA). 13. Design, analysis, and/or preparation of low impact development (LID) site alternatives. 14. Design of integral recreational features such as bikeways and trails within District right-of-way.